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Emerson Rosemount OCX8800
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Section 5:
Calibration
April 2017
Instruction Manual
IM-106-880C, OI
72
Manual O2 and COe Calibration using the Field Communicator -
HART
10. Select START CAL/STEP to start applying the O
2
Low Gas. The time to apply the test gas
is specified by the Gas Time.
11. The Calibration Status should automatically change to FIowO2Low and then
ReadO2Low for a period of time. During this period, if an attempt is made to go to the
next calibration step by pressing OK and selecting START CAL/STEP CAL, you will be
prompted with Operator step command is not accepted at this time.
12. When ready, Calibration Status will stop at AppO2Hi. Switch off the O
2
Low Gas and
switch on the O
2
High Gas. Verify the O
2
concentration measured matches the O2 HIGH
GAS parameter in Setup. Press OK when ready.
13. Select START CAL/STEP CAL to apply the O
2
High Gas. The time to apply the test gas is
specified by the Gas Time.
14. The Calibration Status should automatically change to FlowO2Hi, then ReadO2Hi, and
then ReadCOeLo for a period of time. During this period, if an attempt is made to go the
next calibration step by pressing OK and selecting START CAL/STEP CAL, you will be
prompted with Operator step command is not accepted at this time.
15. When ready, Calibration Status will stop at AppCOeHi. Switch off the O
2
High Gas and
switch on the COe Gas. Verify the COe concentration measured matches the COe TEST
GAS parameter in the Setup. Press OK when ready.
16. Select START CAL/STEP CAL to start applying the COe Gas. The time to apply the test
gas is specified by the Gas Time.
17. The Calibration Status should automatically change to FlowCOeHi and then ReadCOeHi
for a period of time. During this period, if an attempt is made to go the next calibration
step by pressing OK and selecting START CAL/STEP CAL, you will be prompted with
Operator step command is not accepted at this time. The Next Cal Step command is not
accepted at this time.
When ready, Calibration Status will stop at STOP GAS. Switch off the COe gas. Press OK when
ready. Select START CAL/STEP CAL to start purging gas. The time to purge gas is specified by
Purge Time.

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